<template>
  <div>
    <!-- 面包屑导航区域 -->
    <el-breadcrumb separator-class="el-icon-arrow-right">
      <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
      <el-breadcrumb-item>商品管理</el-breadcrumb-item>
      <el-breadcrumb-item>商品列表</el-breadcrumb-item>
    </el-breadcrumb>
    <!-- 卡片视图区域 -->
    <el-card>
      <!-- :gutter 属性绑定 间隙 -->
      <el-row :gutter="20">
        <el-col :span="8">
          <el-input placeholder="请输入内容" v-model="queryInfo.query" clearable @clear="getGoodsList">
            <el-button slot="append" icon="el-icon-search" @click="getGoodsList"></el-button>
          </el-input>
        </el-col>
        <el-col :span="4">
          <el-button type="primary" @click="goAddpage">添加商品</el-button>
        </el-col>
      </el-row>
      <!-- tab 表格区域 -->
      <el-table :data="goodslist" border stripe>
        <el-table-column type="index"></el-table-column>
        <!-- prop属性指定对应数据属性 -->
        <el-table-column label="商品名称" prop="goods_name"></el-table-column>
        <el-table-column label="商品价格" prop="goods_price" width="95px"></el-table-column>
        <el-table-column label="商品重量" prop="goods_weight" width="70px"></el-table-column>
        <el-table-column label="创建时间" prop="add_time" width="150px">
          <template slot-scope="scope">{{scope.row.add_time|dataFormat}}</template>
        </el-table-column>
        <el-table-column label="操作" width="200px">
          <template slot-scope="scope">
            <el-button type="primary" round size="mini" icon="el-icon-edit">编辑</el-button>
            <el-button
              type="danger"
              round
              size="mini"
              icon="el-icon-delete"
              @click="deleteList(scope.row.goods_id)"
            >删除</el-button>
          </template>
        </el-table-column>
      </el-table>
      <!-- 分页区域 -->
      <!-- @current-change 监听页码值的变化 -->
      <!-- :current-page 当前是第几页 需要做绑定 -->
      <!-- :page-sizes 每页显示几条 -->
      <!-- total 总数居 -->
      <!-- :page-size -->
      <el-pagination
        @size-change="handleSizeChange"
        @current-change="handleCurrentChange"
        :current-page="queryInfo.pagenum"
        :page-sizes="[5, 10, 20, 30]"
        :page-size="queryInfo.pagesize"
        layout="total, sizes, prev, pager, next, jumper"
        :total="total"
        background
      ></el-pagination>
    </el-card>
  </div>
</template>

<script>
export default {
  data() {
    return {
      // 查询参数对象
      queryInfo: {
        query: '',
        pagenum: 1,
        pagesize: 10
      },
      // 商品列表
      goodslist: [],
      // 总数据条数
      total: 0
    }
  },
  created() {
    this.getGoodsList()
  },
  methods: {
    //   根据分页获取对应的商品列表
    async getGoodsList() {
      //   get参数都需要提交一个params属性来指定
      const { data: res } = await this.$http.get(`goods`, {
        params: this.queryInfo
      })
      if (res.meta.status !== 200) {
        return this.$message.error('获取商品列表失败')
      }
      this.$message.success('更获取商品列成功')
      console.log(res.data)
      this.goodslist = res.data.goods
      this.total = res.data.total
    },
    handleSizeChange(newSize) {
      this.queryInfo.pagesize = newSize
      this.getGoodsList()
    },
    handleCurrentChange(newPage) {
      this.queryInfo.pagenum = newPage
      this.getGoodsList()
    },

    // 删除选中行数据
    async deleteList(goods_id) {
      // 弹框询问用户是否删除数据
      const confirmResult = await this.$confirm(
        '此操作将永久删除该用户, 是否继续?',
        '提示',
        {
          confirmButtonText: '确定',
          cancelButtonText: '取消',
          type: 'warning'
        }
      ).catch(err => err)

      // 如果用户确认删除 则返回值为字符串 confirm
      // 如果用户取消删除  则返回值为字符串 concel
      if (confirmResult !== 'confirm') {
        return this.$message.info('已取消删除')
      }
      
      const { data: res } = await this.$http.delete(`goods/`+ goods_id)
      if (res.meta.status !== 200) {
          this.$message.error('删除数据失败')
      }
      this.$message.success('删除数据成功')
      this.getGoodsList()
    
    },

    goAddpage(){
        // router路由导航对象 调用push 输入地址
        this.$router.push('/goods/add')
    }
  }
}
</script>

<style>
</style>
